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Meaning of grade 43 cement

Short answer

Grade 43 cement is ordinary Portland cement with a minimum 28-day compressive strength of 43 MPa on standard 70.6 mm mortar cubes. Its 3-day and 7-day strengths are at least 23 MPa and 33 MPa respectively.

What is meant by grade C-43 cement?

Grade 43 cement (IS 8112) is ordinary Portland cement whose 28-day compressive strength, tested on standard 70.6 mm mortar cubes (1:3 cement-sand), is not less than 43 MPa (N/mm²). Its 3-day and 7-day strengths are at least 23 MPa and 33 MPa.

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